Diagnosis Procedure
1.
CHECK LIN COMMUNICATION SIGNAL 1
M.U.T.-III SE DATA MONITOR
Select “Battery current sen value (LIN)” of “IPDM E/R” data monitor item.
Monitor item
Condition
Monitor status
Battery current sen value (LIN)
Engine running
Battery: Full charge
Engine Idling
(–200.00) – (+300.00) A
Is the inspection result normal?
Replace IPDM E/R. Refer to
Removal and Installation
.
2.
CHECK FUSE
Ignition switch OFF.
Check that the following fuse is not blown (open).
No.
Capacity
89
10A
Is the fuse blown (open)?
Replace the blown (open) fuse after repairing the cause of blown (open).
3.
CHECK 12V BATTERY CURRENT SENSOR POWER
Disconnect 12V battery current sensor connector.
Ignition switch ON.
Check the voltage between 12V battery current sensor harness connector and ground.
(+)
(-)
Voltage (V)
12V battery current sensor
Connector
Terminal
F37
1
Ground
12V battery voltage
Is the inspection result normal?
Repair or replace harness.
4.
CHECK LIN COMMUNICATION SIGNAL
Ignition switch ON.
Check signal between 12V battery current sensor harness connector and ground using an oscilloscope.
(+)
(−)
Signal
12V battery current sensor
Connector
Terminal
F37
2
Ground
Is the inspection result normal?
Repair or replace harness.
Replace 12V battery current sensor.